There's one childhood habit that the Willis trio apparently refuse to grow out of, despite all being in their 30s.
Speaking on the What in the Winkler?! podcast this week, actress Rumer Willis, 36, shocked listeners by revealing that she and her sisters Scout and Talluleh still bathe together on a regular basis.
The trio are the daughters of former flames Bruce Willis and Demi Moore, who were married between 1987 and 2000.
The Hollywood couple famously met at a screening for Moore's movie Stakeout, in which she starred with her then-fiancé, Emilio Estevez.
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A whirlwind romance between her and the Die Hard actor later developed, and within the year, they were married.
Sadly, however, after welcoming their three girls together, the couple split in the noughties, citing the business of their careers as the primary reason they'd grown apart behind the scenes.
Thankfully, though, the family have managed to stay close-knit in the years since, with Moore often sharing gushy posts about her ex husband - who is currently in the midst of a battle with dementia.
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And this closeness has seemingly been passed down to the former couple's daughters, who seemingly can't seem to move on from several of nostalgic childhood rituals.
The eldest, Rumer, told listeners of this week's podcast: "We all still take baths together, my sisters and I."
The House Bunny star went on to laugh: "And that’s just the kind of house that I grew up in.
"People might think that that’s crazy and weird, but I don’t."
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The middle Willis sister, Scout, is a 33-year-old singer, whilst Tallulah, the youngest, is also an actress, having starred in The Whole Ten Yards and The Scarlett Letter. She is 31.
Rumer's admission was prompted during a conversation about co-sleeping arrangements with her own 23-month-old daughter, Louetta.
After revealing she still sleeps in the bed as the tot - who is nearing two - she added that she and 62-year-old mum Moore share sleeping arrangements if they're lucky enough to stay with one another.
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"I still sleep in bed with my mom," she joked, referring to The Substance actress.
Rumer's remark comes just weeks after she directed a number of compliments towards her parents during an appearance on ITV's Loose Women.
On the show, the movie star applauded Moore and Willis, for showing her that, even when people fall out of romantic love, there can still be love and respect there.
Crediting her parents for as her co-parenting inspiration - following her split from ex Derek Richard Thomas - Rumer continued: "Even when they split up, they created such a beautiful foundation of prioritizing my sisters and I.
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"I never felt like I had to choose. Like, they never played against each other."
She added: "We were a family, and we still are very much a family no matter what.
"Not only did I feel like that has set me up in my life to have such a beautiful foundation of my own family, but now, as I’m working through co-parenting as well, I feel deep gratitude for the example they’ve set."
Topics: Celebrity, Demi Moore, Parenting, US News, Bruce Willis
Rhianna Benson